.main-lesson
    .content-box
        .lesson-name=name
        .lesson-tags
            - var tagList = tags || []
            each tag in tagList
                .lesson-tag=tag
        .lesson-info
            span.lesson-level 入门级别
            span &nbsp;&nbsp;|&nbsp;&nbsp;预计学时：
            span.lesson-time=classHour && (classHour + "课时")
        .lesson-intro=introduce
        a.join-lesson.btn(href="#!lessons/plan/" + _id) 加入学习
